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1. (WO2007004373) COMPOSITE OPTICAL RECORDING MEDIUM, OPTICAL PICKUP, AND OPTICAL RECORDER/REPRODUCER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/004373 International Application No.: PCT/JP2006/310896
Publication Date: 11.01.2007 International Filing Date: 31.05.2006
IPC:
G11B 7/24 (2006.01) ,G11B 7/135 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
12
Heads, e.g. forming of the optical beam spot or modulation of the optical beam
135
Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
Applicants:
シャープ株式会社 SHARP KABUSHIKI KAISHA [JP/JP]; 〒5458522 大阪府大阪市阿倍野区長池町22番22号 Osaka 22-22, Nagaike-cho, Abeno-ku, Osaka-shi Osaka 5458522, JP (AllExceptUS)
中野 郁雄 NAKANO, Ikuo; null (UsOnly)
高森 信之 TAKAMORI, Nobuyuki; null (UsOnly)
三枝 理伸 MIEDA, Michinobu; null (UsOnly)
志茂 勝則 SHIMO, Masanori; null (UsOnly)
田島 秀春 TAJIMA, Hideharu; null (UsOnly)
森 豪 MORI, Go; null (UsOnly)
山本 真樹 YAMAMOTO, Masaki; null (UsOnly)
酒井 敏彦 SAKAI, Toshihiko; null (UsOnly)
Inventors:
中野 郁雄 NAKANO, Ikuo; null
高森 信之 TAKAMORI, Nobuyuki; null
三枝 理伸 MIEDA, Michinobu; null
志茂 勝則 SHIMO, Masanori; null
田島 秀春 TAJIMA, Hideharu; null
森 豪 MORI, Go; null
山本 真樹 YAMAMOTO, Masaki; null
酒井 敏彦 SAKAI, Toshihiko; null
Agent:
特許業務法人原謙三国際特許事務所 HARAKENZO WORLD PATENT & TRADEMARK; 〒5300041 大阪府大阪市北区天神橋2丁目北2番6号 大和南森町ビル Osaka Daiwa Minamimorimachi Building 2-6, Tenjinbashi 2-chome Kita Kita-ku, Osaka-shi Osaka 530-0041, JP
Priority Data:
2005-19290230.06.2005JP
2006-11983924.04.2006JP
Title (EN) COMPOSITE OPTICAL RECORDING MEDIUM, OPTICAL PICKUP, AND OPTICAL RECORDER/REPRODUCER
(FR) SUPPORT D’ENREGISTREMENT OPTIQUE COMPOSITE, CAPTEUR OPTIQUE ET ENREGISTREUR/REPRODUCTEUR OPTIQUE
(JA) 複合光記録媒体、光ピックアップ、および光記録再生装置
Abstract:
(EN) A recording medium (13) for writing/reading information with a light beam of second wavelength generating a large amount of spherical aberration for the thickness error of a protective layer is arranged between recording layers (11, 15) for writing/reading information with a light beam of first wavelength (longer than the second wavelength). A composite optical recording medium capable of recording/reproducing information with an optical pickup equipped with a single objective lens, and an optical pickup capable of recording/reproducing information on/from the composite optical recording medium can thereby be provided.
(FR) La présente invention concerne un support d’enregistrement (13) pour écrire/lire des informations avec un faisceau lumineux d’une deuxième longueur d’onde générant une grande quantité d’aberrations sphériques pour l’erreur d’épaisseur d’une couche protectrice, ledit support d’enregistrement étant disposé entre des couches d’enregistrement (11, 15) pour écrire/lire des informations avec un faisceau lumineux d’une première longueur d’onde (plus longue que la deuxième longueur d’onde). Ainsi, la présente invention concerne également un support d’enregistrement optique composite pouvant enregistrer/reproduire des informations avec un capteur optique équipé d’une unique lentille optique et un capteur optique pouvant enregistrer/reproduire des informations sur/du support d’enregistrement optique composite.
(JA)  保護層の厚み誤差に対し球面収差の発生量の大きい、第2の波長の光ビームにより情報の書き込み、あるいは、読み出しが行われる記録層(13)を、(第2の波長に長い波長である)第1の波長の光ビームにより情報の書き込み、あるいは、読み出しが行われる記録層(11)と記録層(15)との間に配置する。これにより、単一の対物レンズが備えられた光ピックアップによって情報の記録あるいは再生が可能な複合光記録媒体、および、上記複合光記録媒体に対する情報の記録あるいは再生が可能な光ピックアップを提供できる。
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US20090034388